How do you know the gender of black mollies?

[joshuaj]

I will soon buy a black molly only i want 2. so that means one male and one female. no more, just 2 mollies or one. whats the gender difference?

[ANONYMOUS]

Look for the male sex organ, the gonodopodium. It's pointy and right next to and under the tail.

[ANONYMOUS]

Look for the male sex organ, the gonodopodium. It's pointy and right next to and under the tail.

[junie]

If you want no more than 2 fish, then do not get a pair. Livebearers need to have at least 2 females for every male. If you only have one, the male will stress the female and you will either have a dead fish or a sick one.

As far as being able to tell, in the female the anal fins will be kind of fanned, where the male will have a more pointed shape.=